fix: 修复问题

service/user.service.js

@@ -11,7 +11,7 @@ class UserService {
   // 子用户登录
   async findSubUser(userName, userPwd, openId) {
     const statement =
-      'SELECT id, open_id as openId, user_name as userName, nick_name as nickName, avatar FROM users WHERE (user_name = ? and user_pwd = ? and parent_id is not null) or open_id = ? ;';
+      'SELECT id, open_id as openId, user_name as userName, nick_name as nickName, avatar FROM users WHERE (user_name = ? and user_pwd = ?) or open_id = ? ;';
     const [result] = await connection.execute(statement, [userName, userPwd, openId]);
     return result[0];
   }